package com.szxy.hotel.util;

import java.util.UUID;

public class App {
    public static String getUid() {
        return UUID.randomUUID().toString();
    }
    public static int day(int year,int month){
        int day = 0;
        switch (month){
            case 1:
            case 3:
            case 5:
            case 7:
            case 8:
            case 10:
            case 12:
                day = 31;
                break;
            case 2:
                if((year%4==0&&year%100!=0)||(year%400==0)){
                    day = 29;
                    break;
                }else {
                    day = 28;
                    break;
                }
            case 4:
            case 6:
            case 9:
            case 11:
                day = 30;
                break;
        }
        return day;
    }
}
